| Gulls | Legring : one, coded. | Yellow-legged Gull | Pale Blue [P] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Black (Niger) [N] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Dark Blue [B] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Mediterranean Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). | T |  |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | Yellow [Y] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | Red [R] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | Dark Green [G] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | White [W] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Mediterranean Gull | White [W] | Four alpha-numeric code (4 letters/numbers). | 3 |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Red [R] | Two alpha code (2 letters). |  |  |  | 
          
                  | Gulls | Legrings : combination of coded. | Herring Gull |  |  |  |  |  | 
          
                  | Gulls | Legrings : combination of coded. | Lesser Black-backed Gull |  |  |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-legged Kittiwake | White [W] | Three numeric code (3 numbers). |  |  | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Eurasian Mew Gull | White [W] | Four alpha code (4 letters). | E |  |  | 
          
                  | Gulls | Legring : one, coded. | Mediterranean Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). | 4 |  |  | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | Dark Blue [B] | Four alpha-numeric code (4 letters/numbers). | W |  |  | 
          
                  | Gulls | Legring : one, coded. | Kelp Gull | White [W] | Four alpha code (4 letters). | N: |  |  | 
          
                  | Gulls | Legring : one, coded. | Audouin's Gull | White [W] | Four alpha-numeric code (4 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | Dark Green [G] | Four alpha-numeric code (4 letters/numbers). | 2 |  |  | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). |  | :C | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). | 2 |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | Red [R] | Four alpha-numeric code (4 letters/numbers). | 2 |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). | 2 |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | White [W] | Four alpha-numeric code (4 letters/numbers). | 2 |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | Dark Green [G] | Four alpha-numeric code (4 letters/numbers). | 2 |  |  |